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<h2 title="Uses of Interface org.apache.commons.lang3.concurrent.ConcurrentInitializer" class="title">Uses of Interface<br>org.apache.commons.lang3.concurrent.ConcurrentInitializer</h2>
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<caption><span>Packages that use <a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a></span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Package</th>
<th class="colLast" scope="col">Description</th>
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<tbody>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.commons.lang3.concurrent">org.apache.commons.lang3.concurrent</a></td>
<td class="colLast">
<div class="block">Provides support classes for multi-threaded programming.</div>
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<h3>Uses of <a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a> in <a href="../../../../../../org/apache/commons/lang3/concurrent/package-summary.html">org.apache.commons.lang3.concurrent</a></h3>
<table border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../../org/apache/commons/lang3/concurrent/package-summary.html">org.apache.commons.lang3.concurrent</a> that implement <a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/AtomicInitializer.html" title="class in org.apache.commons.lang3.concurrent">AtomicInitializer</a>&lt;T&gt;</strong></code>
<div class="block">
 A specialized implementation of the <code>ConcurrentInitializer</code> interface
 based on an <a href="http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/atomic/AtomicReference.html?is-external=true" title="class or interface in java.util.concurrent.atomic"><code>AtomicReference</code></a> variable.</div>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/AtomicSafeInitializer.html" title="class in org.apache.commons.lang3.concurrent">AtomicSafeInitializer</a>&lt;T&gt;</strong></code>
<div class="block">
 A specialized <code>ConcurrentInitializer</code> implementation which is similar
 to <a href="../../../../../../org/apache/commons/lang3/concurrent/AtomicInitializer.html" title="class in org.apache.commons.lang3.concurrent"><code>AtomicInitializer</code></a>, but ensures that the <a href="../../../../../../org/apache/commons/lang3/concurrent/AtomicSafeInitializer.html#initialize()"><code>AtomicSafeInitializer.initialize()</code></a>
 method is called only once.</div>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/BackgroundInitializer.html" title="class in org.apache.commons.lang3.concurrent">BackgroundInitializer</a>&lt;T&gt;</strong></code>
<div class="block">
 A class that allows complex initialization operations in a background task.</div>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/CallableBackgroundInitializer.html" title="class in org.apache.commons.lang3.concurrent">CallableBackgroundInitializer</a>&lt;T&gt;</strong></code>
<div class="block">
 A specialized <a href="../../../../../../org/apache/commons/lang3/concurrent/BackgroundInitializer.html" title="class in org.apache.commons.lang3.concurrent"><code>BackgroundInitializer</code></a> implementation that wraps a
 <code>Callable</code> object.</div>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/ConstantInitializer.html" title="class in org.apache.commons.lang3.concurrent">ConstantInitializer</a>&lt;T&gt;</strong></code>
<div class="block">
 A very simple implementation of the <a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent"><code>ConcurrentInitializer</code></a> interface
 which always returns the same object.</div>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/LazyInitializer.html" title="class in org.apache.commons.lang3.concurrent">LazyInitializer</a>&lt;T&gt;</strong></code>
<div class="block">
 This class provides a generic implementation of the lazy initialization
 pattern.</div>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/MultiBackgroundInitializer.html" title="class in org.apache.commons.lang3.concurrent">MultiBackgroundInitializer</a></strong></code>
<div class="block">
 A specialized <a href="../../../../../../org/apache/commons/lang3/concurrent/BackgroundInitializer.html" title="class in org.apache.commons.lang3.concurrent"><code>BackgroundInitializer</code></a> implementation that can deal with
 multiple background initialization tasks.</div>
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<table border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../../org/apache/commons/lang3/concurrent/package-summary.html">org.apache.commons.lang3.concurrent</a> with parameters of type <a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a></span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>static &lt;K,V&gt;&nbsp;V</code></td>
<td class="colLast"><span class="strong">ConcurrentUtils.</span><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentUtils.html#createIfAbsent(java.util.concurrent.ConcurrentMap, K, org.apache.commons.lang3.concurrent.ConcurrentInitializer)">createIfAbsent</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ConcurrentMap.html?is-external=true" title="class or interface in java.util.concurrent">ConcurrentMap</a>&lt;K,V&gt;&nbsp;map,
              K&nbsp;key,
              <a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a>&lt;V&gt;&nbsp;init)</code>
<div class="block">Checks if a concurrent map contains a key and creates a corresponding
 value if not.</div>
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<td class="colFirst"><code>static &lt;K,V&gt;&nbsp;V</code></td>
<td class="colLast"><span class="strong">ConcurrentUtils.</span><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentUtils.html#createIfAbsentUnchecked(java.util.concurrent.ConcurrentMap, K, org.apache.commons.lang3.concurrent.ConcurrentInitializer)">createIfAbsentUnchecked</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ConcurrentMap.html?is-external=true" title="class or interface in java.util.concurrent">ConcurrentMap</a>&lt;K,V&gt;&nbsp;map,
                       K&nbsp;key,
                       <a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a>&lt;V&gt;&nbsp;init)</code>
<div class="block">Checks if a concurrent map contains a key and creates a corresponding
 value if not, suppressing checked exceptions.</div>
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<td class="colFirst"><code>static &lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><span class="strong">ConcurrentUtils.</span><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentUtils.html#initialize(org.apache.commons.lang3.concurrent.ConcurrentInitializer)">initialize</a></strong>(<a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a>&lt;T&gt;&nbsp;initializer)</code>
<div class="block">Invokes the specified <code>ConcurrentInitializer</code> and returns the
 object produced by the initializer.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>static &lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><span class="strong">ConcurrentUtils.</span><code><strong><a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentUtils.html#initializeUnchecked(org.apache.commons.lang3.concurrent.ConcurrentInitializer)">initializeUnchecked</a></strong>(<a href="../../../../../../org/apache/commons/lang3/concurrent/ConcurrentInitializer.html" title="interface in org.apache.commons.lang3.concurrent">ConcurrentInitializer</a>&lt;T&gt;&nbsp;initializer)</code>
<div class="block">Invokes the specified <code>ConcurrentInitializer</code> and transforms
 occurring exceptions to runtime exceptions.</div>
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